ID: 250

AQSQID: 080013001

Site Name: Welby - 78th Ave. & Steele St.

Added: April 21, 2020, 6:24 p.m.

Updated: Sept. 22, 2021, 8:01 a.m.

Location: Denver (Steele St), CO

Reporting: False, Located: True

Current AQI: None

Denver (Steele St) CO, US: 39.8392, -104.9489

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 16, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 66.0 ppb (87) 0.18 ppb (3) N/A N/A 87.0
 
Sept. 16, 2021, 5 p.m. N/A N/A N/A 14.0 ppb (14) N/A 1.0 ppb (2) 56.0 ppb (55) 0.23 ppb (3) 3.0 μg/m3 (3) N/A 55.0
 
Sept. 16, 2021, 4 p.m. N/A N/A N/A 30.0 ppb (29) N/A 1.0 ppb (2) 37.0 ppb (35) 0.29 ppb (4) N/A N/A 35.0
 
Sept. 16, 2021, 3 p.m. N/A N/A N/A 36.0 ppb (34) N/A 1.0 ppb (2) 26.0 ppb (25) 0.36 ppb (5) N/A N/A 34.0
 
Sept. 16, 2021, 2 p.m. N/A N/A N/A 41.0 ppb (39) N/A 1.0 ppb (2) 16.0 ppb (15) 0.44 ppb (5) 96.0 μg/m3 (72) N/A 72.0
 
Sept. 16, 2021, 1 p.m. N/A N/A N/A 49.0 ppb (47) N/A 2.0 ppb (3) 2.0 ppb (2) 0.78 ppb (10) 228.0 μg/m3 (138) N/A 138.0
 
Sept. 16, 2021, noon N/A N/A N/A 47.0 ppb (45) N/A 2.0 ppb (3) 1.0 ppb (1) 0.56 ppb (7) 224.0 μg/m3 (136) N/A 136.0
 
Sept. 16, 2021, 11 a.m. N/A N/A N/A 42.0 ppb (40) N/A 0.0 ppb (0) 1.0 ppb (1) 0.38 ppb (5) 181.0 μg/m3 (114) N/A 114.0
 
Sept. 16, 2021, 10 a.m. N/A N/A N/A 31.0 ppb (30) N/A 0.0 ppb (0) 10.0 ppb (10) 0.26 ppb (4) 146.0 μg/m3 (97) N/A 97.0
 
Sept. 16, 2021, 9 a.m. N/A N/A N/A 25.0 ppb (24) N/A 2.0 ppb (3) 18.0 ppb (17) 0.25 ppb (3) 117.0 μg/m3 (82) N/A 82.0
 
Sept. 16, 2021, 8 a.m. N/A N/A N/A 32.0 ppb (31) N/A 0.0 ppb (0) 14.0 ppb (13) 0.32 ppb (4) 111.0 μg/m3 (79) N/A 79.0
 
Sept. 16, 2021, 7 a.m. N/A N/A N/A 42.0 ppb (40) N/A 0.0 ppb (0) 8.0 ppb (8) 0.41 ppb (5) 116.0 μg/m3 (82) N/A 82.0
 
Sept. 16, 2021, 6 a.m. N/A N/A N/A 27.0 ppb (26) N/A 0.0 ppb (0) 27.0 ppb (25) 0.38 ppb (5) 108.0 μg/m3 (78) N/A 78.0
 
Sept. 16, 2021, 5 a.m. N/A N/A N/A 27.0 ppb (26) N/A 0.0 ppb (0) 30.0 ppb (28) 0.4 ppb (5) 100.0 μg/m3 (74) N/A 74.0
 
Sept. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) 0.57 ppb (7) 92.0 μg/m3 (70) N/A 70.0
 
Sept. 16, 2021, 3 a.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) 27.0 ppb (25) 0.41 ppb (5) 88.0 μg/m3 (68) N/A 68.0
 
Sept. 16, 2021, 2 a.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) 34.0 ppb (32) 0.31 ppb (4) 89.0 μg/m3 (68) N/A 68.0
 
Sept. 16, 2021, 1 a.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) 44.0 ppb (41) 0.21 ppb (3) 14.0 μg/m3 (13) N/A 41.0
 
Sept. 16, 2021, midnight N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 67.0 ppb (91) 0.14 ppb (2) N/A N/A 91.0
 
Sept. 15, 2021, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 77.0 ppb (105) 0.16 ppb (3) N/A N/A 105.0
 
Sept. 15, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 79.0 ppb (106) 0.2 ppb (3) N/A N/A 106.0
 
Sept. 15, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 78.0 ppb (105) 0.18 ppb (3) N/A N/A 105.0
 
Sept. 15, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 74.0 ppb (103) 0.18 ppb (3) N/A N/A 103.0
 
Sept. 15, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 71.0 ppb (101) 0.18 ppb (3) 37.0 μg/m3 (35) N/A 101.0
 
Sept. 15, 2021, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 65.0 ppb (84) 0.19 ppb (3) 25.0 μg/m3 (24) N/A 84.0
 
Sept. 15, 2021, 5 p.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 52.0 ppb (49) 0.22 ppb (3) 18.0 μg/m3 (17) N/A 49.0
 
Sept. 15, 2021, 4 p.m. N/A N/A N/A 14.0 ppb (14) N/A 2.0 ppb (3) 38.0 ppb (36) 0.25 ppb (3) 42.0 μg/m3 (39) N/A 39.0
 
Sept. 15, 2021, 3 p.m. N/A N/A N/A 29.0 ppb (28) N/A 2.0 ppb (3) 22.0 ppb (21) 0.43 ppb (5) 73.0 μg/m3 (60) N/A 60.0
 
Sept. 15, 2021, 2 p.m. N/A N/A N/A 38.0 ppb (36) N/A 2.0 ppb (3) 10.0 ppb (10) 0.64 ppb (7) 84.0 μg/m3 (66) N/A 66.0
 
Sept. 15, 2021, 1 p.m. N/A N/A N/A 34.0 ppb (33) N/A 1.0 ppb (2) 2.0 ppb (2) 0.72 ppb (8) 77.0 μg/m3 (62) N/A 62.0
 
Sept. 15, 2021, noon N/A N/A N/A 30.0 ppb (29) N/A 1.0 ppb (2) 0.0 ppb (0) 0.54 ppb (6) 71.0 μg/m3 (59) N/A 59.0
 
Sept. 15, 2021, 11 a.m. N/A N/A N/A 27.0 ppb (26) N/A 0.0 ppb (0) 3.0 ppb (3) 0.37 ppb (5) 26.0 μg/m3 (25) N/A 26.0
 
Sept. 15, 2021, 10 a.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) 10.0 ppb (10) 0.27 ppb (4) 14.0 μg/m3 (13) N/A 21.0
 
Sept. 15, 2021, 9 a.m. N/A N/A N/A 23.0 ppb (22) N/A 0.0 ppb (0) 11.0 ppb (11) 0.25 ppb (3) 16.0 μg/m3 (15) N/A 22.0
 
Sept. 15, 2021, 8 a.m. N/A N/A N/A 23.0 ppb (22) N/A 0.0 ppb (0) 14.0 ppb (13) 0.26 ppb (4) 22.0 μg/m3 (21) N/A 22.0
 
Sept. 15, 2021, 7 a.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 22.0 ppb (21) 0.26 ppb (4) 23.0 μg/m3 (22) N/A 22.0
 
Sept. 15, 2021, 6 a.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) 17.0 ppb (16) 0.34 ppb (4) 22.0 μg/m3 (21) N/A 21.0
 
Sept. 15, 2021, 5 a.m. N/A N/A N/A 23.0 ppb (22) N/A 1.0 ppb (2) 19.0 ppb (18) 0.32 ppb (4) 32.0 μg/m3 (30) N/A 30.0
 
Sept. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (22) 0.28 ppb (4) 18.0 μg/m3 (17) N/A 22.0
 
Sept. 15, 2021, 3 a.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 35.0 ppb (33) 0.35 ppb (4) 51.0 μg/m3 (48) N/A 48.0
 
Sept. 15, 2021, 2 a.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 40.0 ppb (38) 0.33 ppb (4) 121.0 μg/m3 (84) N/A 84.0
 
Sept. 15, 2021, 1 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 50.0 ppb (47) 0.25 ppb (3) 44.0 μg/m3 (41) N/A 47.0
 
Sept. 15, 2021, midnight N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 54.0 ppb (50) 0.22 ppb (3) 43.0 μg/m3 (40) N/A 50.0
 
Sept. 14, 2021, 11 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 52.0 ppb (49) 0.25 ppb (3) 40.0 μg/m3 (38) N/A 49.0
 
Sept. 14, 2021, 10 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 52.0 ppb (49) 0.25 ppb (3) 42.0 μg/m3 (39) N/A 49.0
 
Sept. 14, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 56.0 ppb (55) 0.22 ppb (3) 40.0 μg/m3 (38) N/A 55.0
 
Sept. 14, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 56.0 ppb (55) 0.21 ppb (3) 27.0 μg/m3 (25) N/A 55.0
 
Sept. 14, 2021, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 50.0 ppb (47) 0.21 ppb (3) 34.0 μg/m3 (32) N/A 47.0
 
Sept. 14, 2021, 6 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 42.0 ppb (39) 0.23 ppb (3) 68.0 μg/m3 (58) N/A 58.0
 
Sept. 14, 2021, 5 p.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 33.0 ppb (31) 0.29 ppb (4) 56.0 μg/m3 (52) N/A 52.0
 
Sept. 14, 2021, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 23.0 ppb (22) 0.29 ppb (4) 81.0 μg/m3 (64) N/A 64.0
 
Sept. 14, 2021, 3 p.m. N/A N/A N/A 24.0 ppb (23) N/A 1.0 ppb (2) 13.0 ppb (13) 0.32 ppb (4) 56.0 μg/m3 (52) N/A 52.0
 
Sept. 14, 2021, 2 p.m. N/A N/A N/A 29.0 ppb (28) N/A 2.0 ppb (3) 6.0 ppb (6) 0.34 ppb (4) 58.0 μg/m3 (53) N/A 53.0
 
Sept. 14, 2021, 1 p.m. N/A N/A N/A 30.0 ppb (29) N/A 0.0 ppb (0) 3.0 ppb (3) 0.38 ppb (5) 66.0 μg/m3 (57) N/A 57.0
 
Sept. 14, 2021, noon N/A N/A N/A 28.0 ppb (27) N/A 0.0 ppb (0) 1.0 ppb (1) 0.31 ppb (4) 50.0 μg/m3 (47) N/A 47.0
 
Sept. 14, 2021, 11 a.m. N/A N/A N/A 17.0 ppb (17) N/A 0.0 ppb (0) 8.0 ppb (8) 0.23 ppb (3) 61.0 μg/m3 (54) N/A 54.0
 
Sept. 14, 2021, 10 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 14.0 ppb (13) 0.15 ppb (2) 90.0 μg/m3 (69) N/A 69.0
 
Sept. 14, 2021, 9 a.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 15.0 ppb (14) 0.19 ppb (3) 99.0 μg/m3 (73) N/A 73.0
 
Sept. 14, 2021, 8 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 20.0 ppb (19) 0.21 ppb (3) 75.0 μg/m3 (61) N/A 61.0
 
Sept. 14, 2021, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (25) 0.18 ppb (3) 69.0 μg/m3 (58) N/A 58.0
 
Sept. 14, 2021, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) 0.17 ppb (3) 60.0 μg/m3 (54) N/A 54.0
 
Sept. 14, 2021, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) 0.18 ppb (3) 48.0 μg/m3 (45) N/A 45.0
 
Sept. 14, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) 54.0 μg/m3 (50) N/A 50.0
 
Sept. 14, 2021, 3 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 33.0 ppb (31) 0.19 ppb (3) 36.0 μg/m3 (34) N/A 34.0
 
Sept. 14, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 37.0 ppb (35) 0.23 ppb (3) 54.0 μg/m3 (50) N/A 50.0
 
Sept. 14, 2021, 1 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 40.0 ppb (38) 0.28 ppb (4) N/A N/A 38.0
 
Sept. 14, 2021, midnight N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 47.0 ppb (44) 0.26 ppb (4) N/A N/A 44.0
 
Sept. 13, 2021, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 54.0 ppb (50) 0.28 ppb (4) N/A N/A 50.0
 
Sept. 13, 2021, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 58.0 ppb (61) 0.32 ppb (4) N/A N/A 61.0
 
Sept. 13, 2021, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 58.0 ppb (61) 0.34 ppb (4) 20.0 μg/m3 (19) N/A 61.0
 
Sept. 13, 2021, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 55.0 ppb (51) 0.34 ppb (4) 33.0 μg/m3 (31) N/A 51.0
 
Sept. 13, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (47) 0.31 ppb (4) 25.0 μg/m3 (24) N/A 47.0
 
Sept. 13, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.29 ppb (4) 25.0 μg/m3 (24) N/A 44.0
 
Sept. 13, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (39) 0.26 ppb (4) 23.0 μg/m3 (22) N/A 39.0
 
Sept. 13, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) 0.19 ppb (3) 51.0 μg/m3 (48) N/A 48.0
 
Sept. 13, 2021, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.15 ppb (2) 53.0 μg/m3 (50) N/A 50.0
 
Sept. 13, 2021, 2 p.m. N/A N/A N/A 28.0 ppb (27) N/A N/A 13.0 ppb (13) 0.37 ppb (5) 111.0 μg/m3 (79) N/A 79.0
 
Sept. 13, 2021, 1 p.m. N/A N/A N/A 39.0 ppb (37) N/A 1.0 ppb (2) N/A N/A 101.0 μg/m3 (74) N/A 74.0
 
Sept. 13, 2021, noon N/A N/A N/A 39.0 ppb (37) N/A 1.0 ppb (2) 1.0 ppb (1) 0.6 ppb (7) 104.0 μg/m3 (76) N/A 76.0
 
Sept. 13, 2021, 11 a.m. N/A N/A N/A 23.0 ppb (22) N/A 0.0 ppb (0) 11.0 ppb (11) 0.29 ppb (4) 39.0 μg/m3 (37) N/A 37.0
 
Sept. 13, 2021, 10 a.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) 17.0 ppb (16) 0.21 ppb (3) 18.0 μg/m3 (17) N/A 17.0
 
Sept. 13, 2021, 9 a.m. N/A N/A N/A 17.0 ppb (17) N/A 0.0 ppb (0) 20.0 ppb (19) 0.22 ppb (3) 11.0 μg/m3 (11) N/A 19.0
 
Sept. 13, 2021, 8 a.m. N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) 24.0 ppb (23) 0.25 ppb (3) 27.0 μg/m3 (25) N/A 25.0
 
Sept. 13, 2021, 7 a.m. N/A N/A N/A 16.0 ppb (16) N/A 1.0 ppb (2) 23.0 ppb (22) 0.28 ppb (4) 42.0 μg/m3 (39) N/A 39.0
 
Sept. 13, 2021, 6 a.m. N/A N/A N/A 28.0 ppb (27) N/A 0.0 ppb (0) 11.0 ppb (11) 0.35 ppb (4) 22.0 μg/m3 (21) N/A 27.0
 
Sept. 13, 2021, 5 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 19.0 ppb (18) 0.34 ppb (4) 35.0 μg/m3 (33) N/A 33.0
 
Sept. 13, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.46 ppb (6) 40.0 μg/m3 (38) N/A 38.0
 
Sept. 13, 2021, 3 a.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 18.0 ppb (17) 0.44 ppb (5) 33.0 μg/m3 (31) N/A 31.0
 
Sept. 13, 2021, 2 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (26) 0.31 ppb (4) 61.0 μg/m3 (54) N/A 54.0
 
Sept. 13, 2021, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (38) 0.22 ppb (3) 33.0 μg/m3 (31) N/A 38.0
 
Sept. 13, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (47) 0.14 ppb (2) 24.0 μg/m3 (23) N/A 47.0
 
Sept. 12, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (50) 0.14 ppb (2) 59.0 μg/m3 (53) N/A 53.0
 
Sept. 12, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (50) 0.14 ppb (2) 38.0 μg/m3 (36) N/A 50.0
 
Sept. 12, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (50) 0.12 ppb (2) 38.0 μg/m3 (36) N/A 50.0
 
Sept. 12, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 57.0 ppb (58) 0.12 ppb (2) 31.0 μg/m3 (29) N/A 58.0
 
Sept. 12, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 59.0 ppb (65) 0.13 ppb (2) 24.0 μg/m3 (23) N/A 65.0
 
Sept. 12, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (50) 0.15 ppb (2) 39.0 μg/m3 (37) N/A 50.0
 
Sept. 12, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (47) 0.15 ppb (2) 35.0 μg/m3 (33) N/A 47.0
 
Sept. 12, 2021, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 44.0 ppb (41) 0.17 ppb (3) 39.0 μg/m3 (37) N/A 41.0
 
Sept. 12, 2021, 3 p.m. N/A N/A N/A 10.0 ppb (10) N/A 2.0 ppb (3) 29.0 ppb (27) 0.21 ppb (3) 34.0 μg/m3 (32) N/A 32.0
 
Sept. 12, 2021, 2 p.m. N/A N/A N/A 18.0 ppb (17) N/A 2.0 ppb (3) 16.0 ppb (15) 0.25 ppb (3) 25.0 μg/m3 (24) N/A 24.0
 
Sept. 12, 2021, 1 p.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 13.0 ppb (13) 0.24 ppb (3) 28.0 μg/m3 (26) N/A 26.0
 
Sept. 12, 2021, noon N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 12.0 ppb (12) 0.21 ppb (3) 22.0 μg/m3 (21) N/A 21.0
 
Sept. 12, 2021, 11 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 9.0 ppb (9) 0.23 ppb (3) 48.0 μg/m3 (45) N/A 45.0
 
Sept. 12, 2021, 10 a.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 13.0 ppb (13) 0.23 ppb (3) 19.0 μg/m3 (18) N/A 18.0
 
Sept. 12, 2021, 9 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 18.0 ppb (17) 0.27 ppb (4) 24.0 μg/m3 (23) N/A 23.0
 
Sept. 12, 2021, 8 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 17.0 ppb (16) 0.35 ppb (4) 35.0 μg/m3 (33) N/A 33.0
 
Sept. 12, 2021, 7 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (24) 0.24 ppb (3) 31.0 μg/m3 (29) N/A 29.0
 
Sept. 12, 2021, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.17 ppb (3) 20.0 μg/m3 (19) N/A 32.0
 
Sept. 12, 2021, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (34) 0.18 ppb (3) 29.0 μg/m3 (27) N/A 34.0
 
Sept. 12, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.19 ppb (3) 59.0 μg/m3 (53) N/A 53.0
 
Sept. 12, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.15 ppb (2) 53.0 μg/m3 (50) N/A 50.0
 
Sept. 12, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 37.0 ppb (35) 0.26 ppb (4) 86.0 μg/m3 (67) N/A 67.0
 
Sept. 12, 2021, 1 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 34.0 ppb (32) 0.27 ppb (4) 70.0 μg/m3 (59) N/A 59.0
 
Sept. 12, 2021, midnight N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 36.0 ppb (34) 0.3 ppb (4) 101.0 μg/m3 (74) N/A 74.0
 
Sept. 11, 2021, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (40) 0.18 ppb (3) 67.0 μg/m3 (57) N/A 57.0
 
Sept. 11, 2021, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 47.0 ppb (44) 0.17 ppb (3) 59.0 μg/m3 (53) N/A 53.0
 
Sept. 11, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (47) 0.14 ppb (2) 92.0 μg/m3 (70) N/A 70.0
 
Sept. 11, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 60.0 ppb (68) 0.15 ppb (2) 87.0 μg/m3 (67) N/A 68.0
 
Sept. 11, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 61.0 ppb (71) 0.15 ppb (2) 23.0 μg/m3 (22) N/A 71.0
 
Sept. 11, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 58.0 ppb (61) 0.16 ppb (3) 32.0 μg/m3 (30) N/A 61.0
 
Sept. 11, 2021, 5 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 54.0 ppb (50) 0.25 ppb (3) 34.0 μg/m3 (32) N/A 50.0
 
Sept. 11, 2021, 4 p.m. N/A N/A N/A 24.0 ppb (23) N/A 3.0 ppb (5) 34.0 ppb (32) 0.29 ppb (4) 76.0 μg/m3 (62) N/A 62.0
 
Sept. 11, 2021, 3 p.m. N/A N/A N/A 26.0 ppb (25) N/A 0.0 ppb (0) 23.0 ppb (22) 0.33 ppb (4) 64.0 μg/m3 (56) N/A 56.0
 
Sept. 11, 2021, 2 p.m. N/A N/A N/A 30.0 ppb (29) N/A 2.0 ppb (3) 14.0 ppb (13) 0.38 ppb (5) 66.0 μg/m3 (57) N/A 57.0
 
Sept. 11, 2021, 1 p.m. N/A N/A N/A 37.0 ppb (35) N/A 1.0 ppb (2) 4.0 ppb (4) 0.44 ppb (5) 102.0 μg/m3 (75) N/A 75.0
 
Sept. 11, 2021, noon N/A N/A N/A 37.0 ppb (35) N/A 1.0 ppb (2) 1.0 ppb (1) 0.44 ppb (5) 74.0 μg/m3 (61) N/A 61.0
 
Sept. 11, 2021, 11 a.m. N/A N/A N/A 38.0 ppb (36) N/A 0.0 ppb (0) 0.0 ppb (0) 0.43 ppb (5) 105.0 μg/m3 (76) N/A 76.0
 
Sept. 11, 2021, 10 a.m. N/A N/A N/A 28.0 ppb (27) N/A 0.0 ppb (0) 10.0 ppb (10) 0.33 ppb (4) 41.0 μg/m3 (38) N/A 38.0
 
Sept. 11, 2021, 9 a.m. N/A N/A N/A 26.0 ppb (25) N/A 0.0 ppb (0) 13.0 ppb (13) 0.41 ppb (5) 48.0 μg/m3 (45) N/A 45.0
 
Sept. 11, 2021, 8 a.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) 20.0 ppb (19) 0.39 ppb (5) 57.0 μg/m3 (52) N/A 52.0
 
Sept. 11, 2021, 7 a.m. N/A N/A N/A 24.0 ppb (23) N/A 0.0 ppb (0) 28.0 ppb (26) 0.41 ppb (5) 52.0 μg/m3 (49) N/A 49.0
 
Sept. 11, 2021, 6 a.m. N/A N/A N/A 39.0 ppb (37) N/A 0.0 ppb (0) 13.0 ppb (13) 0.59 ppb (7) 66.0 μg/m3 (57) N/A 57.0
 
Sept. 11, 2021, 5 a.m. N/A N/A N/A 38.0 ppb (36) N/A 0.0 ppb (0) 15.0 ppb (14) 0.47 ppb (6) 60.0 μg/m3 (54) N/A 54.0
 
Sept. 11, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.48 ppb (6) 33.0 μg/m3 (31) N/A 31.0
 
Sept. 11, 2021, 3 a.m. N/A N/A N/A 45.0 ppb (43) N/A 0.0 ppb (0) 9.0 ppb (9) 0.83 ppb (10) 69.0 μg/m3 (58) N/A 58.0
 
Sept. 11, 2021, 2 a.m. N/A N/A N/A 26.0 ppb (25) N/A 0.0 ppb (0) 23.0 ppb (22) 0.42 ppb (5) 128.0 μg/m3 (88) N/A 88.0
 
Sept. 11, 2021, 1 a.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) 37.0 ppb (35) 0.35 ppb (4) 91.0 μg/m3 (69) N/A 69.0
 
Sept. 11, 2021, midnight N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 54.0 ppb (50) 0.23 ppb (3) 89.0 μg/m3 (68) N/A 68.0
 
Sept. 10, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 68.0 ppb (94) 0.17 ppb (3) 112.0 μg/m3 (80) N/A 94.0
 
Sept. 10, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 73.0 ppb (103) 0.16 ppb (3) 69.0 μg/m3 (58) N/A 103.0
 
Sept. 10, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 72.0 ppb (102) 0.15 ppb (2) 46.0 μg/m3 (43) N/A 102.0
 
Sept. 10, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 67.0 ppb (91) 0.15 ppb (2) 60.0 μg/m3 (54) N/A 91.0
 
Sept. 10, 2021, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 64.0 ppb (81) 0.15 ppb (2) 31.0 μg/m3 (29) N/A 81.0
 
Sept. 10, 2021, 6 p.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 59.0 ppb (65) 0.25 ppb (3) 62.0 μg/m3 (55) N/A 65.0
 
Sept. 10, 2021, 5 p.m. N/A N/A N/A 32.0 ppb (31) N/A 2.0 ppb (3) 40.0 ppb (38) 0.36 ppb (5) 79.0 μg/m3 (63) N/A 63.0
 
Sept. 10, 2021, 4 p.m. N/A N/A N/A 38.0 ppb (36) N/A 2.0 ppb (3) 24.0 ppb (23) 0.42 ppb (5) 115.0 μg/m3 (81) N/A 81.0
 
Sept. 10, 2021, 3 p.m. N/A N/A N/A 48.0 ppb (46) N/A 1.0 ppb (2) 12.0 ppb (12) 0.54 ppb (6) 151.0 μg/m3 (99) N/A 99.0
 
Sept. 10, 2021, 2 p.m. N/A N/A N/A 50.0 ppb (48) N/A 1.0 ppb (2) 4.0 ppb (4) 0.81 ppb (10) 192.0 μg/m3 (120) N/A 120.0
 
Sept. 10, 2021, 1 p.m. N/A N/A N/A 45.0 ppb (43) N/A 1.0 ppb (2) 3.0 ppb (3) 0.71 ppb (8) 150.0 μg/m3 (99) N/A 99.0
 
Sept. 10, 2021, noon N/A N/A N/A 44.0 ppb (42) N/A 1.0 ppb (2) 0.0 ppb (0) 0.67 ppb (8) 120.0 μg/m3 (84) N/A 84.0
 
Sept. 10, 2021, 11 a.m. N/A N/A N/A 35.0 ppb (34) N/A 0.0 ppb (0) 4.0 ppb (4) 0.42 ppb (5) 70.0 μg/m3 (59) N/A 59.0
 
Sept. 10, 2021, 10 a.m. N/A N/A N/A 28.0 ppb (27) N/A 0.0 ppb (0) 13.0 ppb (13) 0.37 ppb (5) 48.0 μg/m3 (45) N/A 45.0
 
Sept. 10, 2021, 9 a.m. N/A N/A N/A 36.0 ppb (34) N/A 0.0 ppb (0) 4.0 ppb (4) 0.47 ppb (6) 40.0 μg/m3 (38) N/A 38.0
 
Sept. 10, 2021, 8 a.m. N/A N/A N/A 38.0 ppb (36) N/A 0.0 ppb (0) 4.0 ppb (4) 0.56 ppb (7) 64.0 μg/m3 (56) N/A 56.0
 
Sept. 10, 2021, 7 a.m. N/A N/A N/A 43.0 ppb (41) N/A 0.0 ppb (0) 1.0 ppb (1) 0.64 ppb (7) 79.0 μg/m3 (63) N/A 63.0
 
Sept. 10, 2021, 6 a.m. N/A N/A N/A 44.0 ppb (42) N/A 0.0 ppb (0) 2.0 ppb (2) 0.68 ppb (8) 73.0 μg/m3 (60) N/A 60.0
 
Sept. 10, 2021, 5 a.m. N/A N/A N/A 34.0 ppb (33) N/A 0.0 ppb (0) 12.0 ppb (12) 0.54 ppb (6) 78.0 μg/m3 (63) N/A 63.0
 
Sept. 10, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (17) 0.51 ppb (6) 95.0 μg/m3 (71) N/A 71.0
 
Sept. 10, 2021, 3 a.m. N/A N/A N/A 43.0 ppb (41) N/A 0.0 ppb (0) 16.0 ppb (15) 0.73 ppb (8) 65.0 μg/m3 (56) N/A 56.0
 
Sept. 10, 2021, 2 a.m. N/A N/A N/A 40.0 ppb (38) N/A 0.0 ppb (0) 9.0 ppb (9) 0.72 ppb (8) 143.0 μg/m3 (95) N/A 95.0
 
Sept. 10, 2021, 1 a.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) 35.0 ppb (33) 0.34 ppb (4) 84.0 μg/m3 (66) N/A 66.0
 
Sept. 10, 2021, midnight N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 54.0 ppb (50) 0.23 ppb (3) 42.0 μg/m3 (39) N/A 50.0
 
Sept. 9, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 66.0 ppb (87) 0.2 ppb (3) N/A N/A 87.0
 
Sept. 9, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 72.0 ppb (102) 0.2 ppb (3) 96.0 μg/m3 (72) N/A 102.0
 
Sept. 9, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 69.0 ppb (97) 0.17 ppb (3) 57.0 μg/m3 (52) N/A 97.0
 
Sept. 9, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 64.0 ppb (81) 0.16 ppb (3) 75.0 μg/m3 (61) N/A 81.0
 
Sept. 9, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 62.0 ppb (74) 0.17 ppb (3) 52.0 μg/m3 (49) N/A 74.0